In 1397 Feb 20, Thomas Brook, chivaler was granted, by Richard II, (In year 20 of his reign) a Royal licence to crenellate Holdich (Holditch Court, Thorncombe)

"Licence for Thomas Brook, knight, to strengthen with a wall of stone and lime his mansion-house within his manor (mansum infra manerium suum) of Holdich, co. Devon, and enclose and make a park of 200 acres of pasture and wood belonging to the manor, and hold the premises, including a deer-leap in the park, to him his heirs for ever."

Granted at Westminster, by privy seal.

also to impark 200 acres of pasture and wood belonging to the manor.

Original source is

• Calendar of Patent Rolls (1396-99) p85

(In fact, the original source given is usually a transcription/translation of what are precious medieval documents not readily availably. It should be noted that these transcription/translations often date to the nineteenth or early twentieth centuries and that unwitting bias of transcribers may affect the translation. Care should also be taken to avoid giving modern meaning to the medieval use of certain stock words and terms.)

Significant later source are;

• Emery, Anthony, 2006, Greater Medieval Houses Vol3 (Cambridge) p695
  Higham, R. A., 1988, 'Devon Castles: an annotated list' Proceedings of the Devon Archaeological Society Vol46 p146
  Turner, T.H. and Parker, J.H., 1859, Some account of Domestic Architecture in England (Oxford) Vol3 pt2 p420

More details about licences to crenellate can be found here.

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